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Stegosaurus
(Encyclopedia)Stegosaurus stĕgəsôrˈəs [key] [Gr.,=roof lizard], quadriped ornithischian dinosaur of the late Jurassic period. About 29 ft 6 in (9 m) long, it had short forelegs, four long bony spikes on a flex...Dinosaur National Monument
(Encyclopedia)Dinosaur National Monument: see National Parks and Monuments (table)national parks and monuments (table). ...Diplodocus
(Encyclopedia)Diplodocus dĭplŏdˈəkəs [key] [Gr., = double beam (or rafter)], immense quadruped herbivorous dinosaur found in the late Jurassic strata of the Colorado, Utah, and Wyoming. It had a long whipl...Tyrannosaurus
(Encyclopedia)Tyrannosaurus tīrănˌōsôrˈəs, tĭr– [key] [Gr.,=tyrant lizard], member of a family, Tyrannosauridae, of bipedal carnivorous saurischian dinosaurs characterized by having strong hind limbs, a m...Gijón
(Encyclopedia)Gijón hēhōnˈ [key], city, Oviedo prov., N Spain, in Asturias, on the Bay of Biscay. This ...Archaeopteryx
(Encyclopedia)Archaeopteryx ärˌkēŏpˈtərĭks [key] [Gr.,=primitive wing], a 150 million-year-old fossil animal first discovered in 1860 in the late Jurassic limestone of Solnhofen, Bavaria, and described the f...pterosaur
(Encyclopedia)pterosaur tĕrˈəsôrˌ [key] [Gr., = winged lizard], extinct flying reptile (commonly called pterodactyl [Gr., = wing finger]) of the order Pterosauria, common in the late Triassic and Creta...Triceratops
(Encyclopedia)Triceratops trīsĕrˈətŏps [key] [Gr., = three-horn face], genus of ornithischian quadruped dinosaurs of the late Cretaceous period. Because of some variations in sample fossils, it was thought...Ankylosaurus
(Encyclopedia)Ankylosaurus ănˌkələsôrˈəs [key], [Gr.,=crooked lizard], genus of heavily armored, herbivorous quadripedal dinosaurs, the best known of which is the species A. magniventris, the largest and hea...American Museum of Natural History
(Encyclopedia)American Museum of Natural History, incorporated in New York City in 1869 to promote the study of natural science and related subjects. Buildings on its present site facing Central Park were opened in...Browse by Subject
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